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    SYSTEM AND METHOD FOR VARIABLE ACTUATION OF A VALVE OF AN INTERNAL COMBUSTION ENGINE, WITH AN ELECTRICALLY OPERATED CONTROL VALVE HAVING AN IMPROVED CONTROL
    1.
    发明公开
    SYSTEM AND METHOD FOR VARIABLE ACTUATION OF A VALVE OF AN INTERNAL COMBUSTION ENGINE, WITH AN ELECTRICALLY OPERATED CONTROL VALVE HAVING AN IMPROVED CONTROL 审中-公开
    对于电动内燃发动机可变气门操作的系统和方法操作的控制阀，改进的控制

    公开(公告)号：EP3181842A1

    公开(公告)日：2017-06-21

    申请号：EP15200888.4

    申请日：2015-12-17

    申请人： C.R.F. Società Consortile per Azioni

    发明人： STUCCHI, Sergio ,  RICCO, Raffaele ,  GARGANO, Marcello ,  DE MICHELE, Onofrio ,  ALTAMURA, Chiara ,  LEPORE, Domenico

    IPC分类号： F01L9/02

    CPC分类号： F01L1/24 ,  F01L1/047 ,  F01L1/462 ,  F01L9/023 ,  F01L9/025 ,  F01L2001/2444 ,  F01L2800/19 ,  F16H25/10 ,  F16H25/14

    摘要： A system for variable actuation of an engine valve of an internalcombustion engine comprises a master piston (16) driven directly or indirectly by a cam (14) of a camshaft (11). A slave piston (21) is driven by said master piston (16) by means of a volume of pressurized fluid (C) interposed between the master piston (16) and the slave piston (21). The slave piston (21) causes the engine valve (7) to open, against the action of a spring (9). An electrically operated control valve (24) controls a communication between the volume of pressurized fluid (C) and an environment at lower pressure (23), with which a fluid accumulator (270) is in communication. An electronic control unit (25) is programmed for controlling the electrically operated control valve (24), so as to actuate the engine valve (7), depending upon the operating conditions, according to one or more different valve modes, including a late-valve-opening (LVO) mode and/or a multilift (ML) valve mode. When one of these valve modes is actuated, the control valve (24) opens the aforesaid communication in advance with respect to the end of the lift cycle of the cam (14), and not after closing of the engine valve (7), in such a way as to prevent or reduce a decrease in pressure in the volume of pressurized fluid (C) after closing of the engine valve (7).

    摘要翻译： 一种用于发动机的internalcombustion的发动机气门的可变致动系统包括由凸轮轴（11）的凸轮（14）直接或间接驱动的主活塞（16）。 从动活塞（21）由所述主活塞（16）由所述主活塞（16）和从动活塞（21）之间的加压流体（C）的体积的装置驱动。 从动活塞（21）使所述发动机阀（7）打开，克服弹簧（9）的作用。 （270）是在通信的电在较低的压力（23），利用该一流体蓄能器操作的控制阀（24）控制的加压流体（C）的体积之间的通信和对环境。 的电子控制单元（25）被编程用于控制电动操作的控制阀（24），以便致动发动机阀（7），在所述操作条件根据雅丁到一个或多个不同的阀模式，包括晚期 开阀（LVO）模式和/或一个MULTILIFT（ML）阀模式。 当的合成阀模式中的一个被致动时，控制阀（24）打开上述连通预先相对于所述凸轮（14）的升程周期结束时，而不是在发动机阀（7）的闭合后 求的方式的发动机阀（7）的开闭之后，以防止或减少在压在加压流体（C）的体积的减少。

    INTERNAL COMBUSTION ENGINE WITH FAST COMBUSTION, AND METHOD FOR CONTROLLING THE ENGINE
    5.
    发明公开
    INTERNAL COMBUSTION ENGINE WITH FAST COMBUSTION, AND METHOD FOR CONTROLLING THE ENGINE 审中-公开

    公开(公告)号：EP4015787A1

    公开(公告)日：2022-06-22

    申请号：EP20214913.4

    申请日：2020-12-17

    申请人： C.R.F. Società Consortile per Azioni

    发明人： RICCO, Raffaele ,  STUCCHI, Sergio ,  GARGANO, Marcello ,  MAZZARELLA, Carlo ,  LEPORE, Domenico

    IPC分类号： F01L9/11 ,  F01L9/14 ,  F01L13/00 ,  F02D41/00 ,  F02D13/02

    摘要： In an internal combustion engine provided with an electro-hydraulic system for variable actuation of the intake valves of the engine, each cylinder has two intake valves (VT, VS), associated with two intake conduits. A first intake conduit (4T) is configured so as to generate, within the cylinder, a main tumble motion, a cross-tumble motion and a swirl motion of the airflow. A second intake conduit (4S) has a scroll-type configuration, so as to generate a swirl motion of the airflow within the cylinder in a direction opposite to that of the swirl motion induced by the first intake conduit (4T). An electronic controller (25) is configured to partially or entirely open the intake valve (VT) associated to the first intake conduit in a condition of reduced operation of the engine, below a predetermined engine load and/or below a predetermined engine rotational speed, and to always open both the intake valves (VT, VS) in the remaining conditions of operation of the engine.

    INJECTION METHOD FOR INJECTING FUEL INTO A COMBUSTION CHAMBER OF AN INTERNAL-COMBUSTION ENGINE, ATOMIZER OF A FUEL ELECTRO-INJECTOR FOR CARRYING OUT SUCH INJECTION METHOD, AND PROCESS FOR PRODUCING SUCH ATOMIZER
    7.
    发明公开
    INJECTION METHOD FOR INJECTING FUEL INTO A COMBUSTION CHAMBER OF AN INTERNAL-COMBUSTION ENGINE, ATOMIZER OF A FUEL ELECTRO-INJECTOR FOR CARRYING OUT SUCH INJECTION METHOD, AND PROCESS FOR PRODUCING SUCH ATOMIZER 审中-公开
    用于将燃料喷射到内燃机的燃烧室中的喷射方法，用于执行这种喷射方法的燃料电喷射器的雾化器以及用于制造这种雾化器的方法

    公开(公告)号：EP3165759A8

    公开(公告)日：2017-08-23

    申请号：EP15193750.5

    申请日：2015-11-09

    申请人： C.R.F. SOCIETÀ CONSORTILE PER AZIONI

    发明人： STUCCHI, Sergio ,  RICCO, Raffaele ,  DE MICHELE, Onofrio ,  GARGANO, Marcello ,  MAZZARELLA, Carlo ,  LEPORE, Domenico

    IPC分类号： F02M61/18 ,  F02M61/04 ,  F02M61/06 ,  F02M61/08 ,  F02M61/12

    CPC分类号： F02M61/042 ,  F02M61/06 ,  F02M61/08 ,  F02M61/12 ,  F02M61/1806 ,  F02M61/1833 ,  F02M61/1873 ,  F02M61/1893

    摘要： According to the method, fuel is injected into a combustion chamber of an internal-combustion engine via an atomizer (10) provided with a nozzle (11) having an internal seat (13) and a sealing seat (21); the atomizer is moreover provided with a valve needle (12) having a head (20) designed to couple to the sealing seat (21) and a stem (41), which engages the internal seat (13); the stem (41) and the nozzle (11) define a passage (16) having an annular chamber (43), which axially ends at the sealing seat (21); the stem (41) has an intermediate portion (45) coupled in an axially sliding way in the internal seat (13) and defining a plurality of channels (67), the outlets (72) of which are arranged at the annular chamber (43); the sealing seat (21) and the head (20) of the valve needle (12) define a outflow area (14), which is annular and has a width that increases as the opening stroke of the valve needle (12) progresses; the fuel is injected in such a way as to have a non-uniform velocity modulus at the outflow area (14), as the position in the circumferential direction varies, at least in a reference operating condition of the engine.

    摘要翻译： 根据该方法，燃料通过设置有具有内座（13）和密封座（21）的喷嘴（11）的雾化器（10）被喷射到内燃机的燃烧室中; 雾化器还设置有阀针（12），该阀针具有设计成联接到密封座（21）的头部（20）和与内部座（13）接合的杆（41）。 所述杆（41）和所述喷嘴（11）限定具有环形室（43）的通道（16），所述环形室沿轴向在所述密封座（21）处终止; 所述杆（41）具有中间部分（45），所述中间部分以轴向滑动的方式联接在所述内座（13）中并且限定多个通道（67），所述多个通道（67）布置在所述环形室（43 ）; 阀针（12）的密封座（21）和头部（20）限定出一个流出区域（14），该流出区域是环形的并且其宽度随着阀针（12）的打开行程的进展而增加; 至少在发动机的参考运行状态下，燃料以这样的方式喷射，即在周向方向上的位置变化时在流出区域（14）处具有不均匀的速度模量。

    INJECTION METHOD FOR INJECTING FUEL INTO A COMBUSTION CHAMBER OF AN INTERNAL-COMBUSTION ENGINE, ATOMIZER OF A FUEL ELECTRO-INJECTOR FOR CARRYING UT SUCH INJECTION METHOD, AND PROCESS FOR THE PRODUCING SUCH ATOMIZER
    8.
    发明公开
    INJECTION METHOD FOR INJECTING FUEL INTO A COMBUSTION CHAMBER OF AN INTERNAL-COMBUSTION ENGINE, ATOMIZER OF A FUEL ELECTRO-INJECTOR FOR CARRYING UT SUCH INJECTION METHOD, AND PROCESS FOR THE PRODUCING SUCH ATOMIZER 审中-公开
    用于喷射燃料进入燃烧室的内燃发动机的注射法，雾化器一个KRAFTSTOFFELEKTROINJEKTORS实现这样的注射程序和方法用于生产这样的雾化器

    公开(公告)号：EP3165759A1

    公开(公告)日：2017-05-10

    申请号：EP15193750.5

    申请日：2015-11-09

    申请人： C.R.F. SOCIETÀ CONSORTILE PER AZIONI

    发明人： STUCCHI, Sergio ,  RICCO, Raffaele ,  DE MICHELE, Onofrio ,  GARGANO, Marcello ,  MAZZARELLA, Carlo ,  LEPORE, Domenico

    IPC分类号： F02M61/18 ,  F02M61/04 ,  F02M61/06 ,  F02M61/08 ,  F02M61/12

    CPC分类号： F02M61/042 ,  F02M61/06 ,  F02M61/08 ,  F02M61/12 ,  F02M61/1806 ,  F02M61/1833 ,  F02M61/1873 ,  F02M61/1893

    摘要： According to the method, fuel is injected into a combustion chamber of an internal-combustion engine via an atomizer (10) provided with a nozzle (11) having an internal seat (13) and a sealing seat (21); the atomizer is moreover provided with a valve needle (12) having a head (20) designed to couple to the sealing seat (21) and a stem (41), which engages the internal seat (13); the stem (41) and the nozzle (11) define a passage (16) having an annular chamber (43), which axially ends at the sealing seat (21); the stem (41) has an intermediate portion (45) coupled in an axially sliding way in the internal seat (13) and defining a plurality of channels (67), the outlets (72) of which are arranged at the annular chamber (43); the sealing seat (21) and the head (20) of the valve needle (12) define a outflow area (14), which is annular and has a width that increases as the opening stroke of the valve needle (12) progresses; the fuel is injected in such a way as to have a non-uniform velocity modulus at the outflow area (14), as the position in the circumferential direction varies, at least in a reference operating condition of the engine.

    摘要翻译： 。根据该方法，燃料通过喷嘴在设置有（11）雾化器（10），具有在内部座（13）和一个密封座（21）喷射到内燃机的燃烧室; 雾化器更上方设置有阀针（12），具有被设计成耦合到所述密封座（21）的头部（20）和柄（41），其接合所述内部座（13）; 所述杆（41）和具有在环形腔室（43），在所述密封座（21）轴向地结束该喷嘴（11）限定的通道（16）; 所述杆（41）具有在耦合在内部座（13）一轴向滑动方式的中间部分（45）和定义信道与多个（67），出口（72），其中在所述环形腔室被布置（43 ）; 密封座（21）和所述阀针的头部（20）（12）限定了流出区域（14），所有这些是环形设计并具有宽度并随着阀针的打开行程（12）前进; 燃料在寻求一种方法，以具有在流出区域（14）的非均匀的速度模量注入，如在圆周方向上变化的位置，至少在发动机的一个参考的操作条件。